Yes, you can use the same test certificate for multiple university applications.
However, each university may have different requirements, such as a minimum passing score and a limit on the number of test attempts. Be sure to check these details with each university’s admissions office. Also, make sure to link your account to all the universities you wish to apply to.
How to link your account to universities
1. Click on your name in the upper right corner. Choose "Settings".
2. Under "OMPT programs" click on "Add programs".
3. Select the universities you wish to connect with. When you are done, scroll down to the bottom of the page click on "Next".
4. On the next page, select the program(s).
5. Click on the checkbox to accept that the school can access your test score. Then, click on the button to register for that exam.
If you go back to your profile settings, you will see that the new university/universities and program(s) have been added.